Either they just opened up the entire Ot-Skadak hive to hacking from mind altering suborned Urtheep tech like Schlock was worried about, or the enemy plan involved heading to Eina-afa and suborning the Hive from there and they just gave them troops on the ground.

Or maybe as more of a longshot: they've already suborned the hive mind and everything the Ot-Skadak have done so far has been to push the toughs into a useful position.

I have to wonder how vulnerable the individual nodes are to being hacked. Sure, you can take the node, but unless you can transmit your node suborning virus through the hive mind's communications (which strikes me as kinda unlikely) the node is all you have, not the larger hive mind. That, of course, doesn't hold if the Eina-Afa hive mind is being suborned behind them.